n object moves with a constant speed of 30 m/s on a circular track of radius 150 m. What is the acceleration of the object

Which measurement has three significant figures? A. 0.015 m B. 105 m C. 150 m D. 1.050 m

What are two layers that can stop alpha radiation?

If the acceleration is 400 m/s/s and the mass is 800kg, calculate the force

Two manned satellites approaching one another at a relative speed of 0.450 m/s intend to dock. The first has a mass of 4.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg.

Sound waves A. are a part of the electromagnetic spectrum B. do not require a medium for transmission C. are longitudinal waves D. are transverse waves The Doppler effect occurs with A. only sound waves B. only transverse waves C. only water waves D.

Why do responsible consumers use credit and credit cards?

According to Ptolemy's model of the movement of celestial bodies, A. the sun is the center of the universe. B. the earth rotates around the moon. C. planets orbit in circular paths around the earth. D. the earth rotates around the sun.

What is an organ that has villi to absorb the nutrients

Assume you are a Medieval knight attacking a castle with a cannon. The ball leaves the cannon with a speed of 47.7 m/s. The barrel's angle with respect to the ground is 43.

0.005 kg of copper was heated from 20°C to 80°C. How much energy was used to eat Cu? (Specific heat capacity of Cu is 385 J/kg °C)